RESONANT PHOTOIONIZATION SPECTROSCOPY OF REFRACTORY METAL-RARE GAS COMPLEXES
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Date
1987
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Ohio State University
Abstract
The weakly attractive interatomic potential between a refractory metal and a rare gas atom is explored by direct spectroscopic access of rovibronic levels in the AlAr van der Waals complex. Mass-resolved resonance-enhanced multiphoton ionization is used to probe the spectral region about the $Al ^{2}S_{1/2} - ^{2}P_{1/2}$ transition. A vibrational progression in the AlAr $^{2}\sigma^{+}$ state is identified on the $AlAr^{+}$ mass channel. Lower limits for binding energies in the $X ^{2}\Pi_{1/2}$ and $B ^{2}\Sigma^{+}$ states are found to be 133 and $373 cm^{-1}$, respectively. Results are compared to earlier work on NaAr.
Description
Author Institution: Department of Chemistry and Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia